Looking for futures symbols?
Collective2 Stock and ETF Option Symbols
We use the new Options Symbology Initiative (OSI). This is an attempt to make options symbols more easily understandable by having the symbol contain all information needed to decode an option. The new format is as follows:
Let's look at an example. Here is an option symbol we can decode: CAB1908R15
CAB1908R15
Security Symbol: CAB
Expiration Year: 2019
Expiration Day of Month: 8
Month Code is "R", which means:
June Put (see chart below, for month codes)
Strike price:15.0 (note that strikes can be non-integer, so a valid symbol can look like this: GQO1020C7.5)
Month Codes:
Call | Put | |
---|---|---|
January | A | M |
February | B | N |
March | C | O |
April | D | P |
May | E | Q |
June | F | R |
July | G | S |
August | H | T |
September | I | U |
October | J | V |
November | K | W |
December | L | X |